SQL 错误代码：1452 将数据插入 table 且 FK 引用另一个 table

Question

我目前正在尝试通过 SQL 脚本用数据填充我的 table，并且在填充我的 book 时让我的 FKs 合作一直遇到问题 table。我已经阅读了有关该问题的其他主题并尝试了 ON DELETE CASCADE 并且首先填充 FK 的其他建议对我也没有用。我还看到您可以覆盖 FK 检查，但这似乎对创建工作数据库适得其反。

我附上了我的脚本，create.sql 运行良好，但 insert.sql 正如我所说的那样卡在了最后一个命令上。

感谢您的宝贵时间！

-----
create.sql
-----
CREATE TABLE Dept (
    Dept_ID INT(2) NOT NULL,
    Dept_Name CHAR(16) NOT NULL,
    Dept_Floor INT(1) NOT NULL,
    PRIMARY KEY (Dept_ID)
);

CREATE TABLE Publisher (
    Publisher_Name VARCHAR(50) NOT NULL,
    PubAddress VARCHAR(20) NOT NULL,
    Phone_Number VARCHAR(15) NOT NULL,
    PRIMARY KEY (Publisher_Name)
);

CREATE TABLE Book (
    Book_ID INT(6) NOT NULL,
    Title VARCHAR(32) NOT NULL,
    Dept_ID INT(2),
    Publisher_Name VARCHAR(20),
    PRIMARY KEY (Book_ID),
    FOREIGN KEY (Dept_ID) REFERENCES Dept(Dept_ID),
    FOREIGN KEY (Publisher_Name) REFERENCES Publisher(Publisher_Name)
);
-----
insert.sql
-----
INSERT INTO Dept (Dept_ID, Dept_Name, Dept_Floor) 
VALUES ('01', 'Fantasy', '1'), ('02', 'Sci-Fi', '1'), ('03', 'Fiction', '2'), ('04', 'Educational', '1'), ('05', 'Crime', '2');

INSERT INTO Publisher (Publisher_Name, PubAddress, Phone_Number)
VALUES ('Bloomsbury', '234 Hay Street', '14325673489'), ('Charles Scribner','236 Hone Way','173677654765'),('Pigeon Books','5444 North Street','17884787644'), ('Academic Press', '2354 Bridge Road', '175634598234'), ('Bantam Books', '2623 River Road', '17234648444');

INSERT INTO Book (Book_ID, Title, Dept_ID, Publisher_Name) 
VALUES ('000001','Harry Potter and the Goblet of Fire', '01', 'Bloomsbury'), ('000002','A Brief History of Time', '04', 'Puffin Books'), ('000003','The Great Gatsby', 'Charles Scribners Sons', '03'), ('000004','Advances in Ecological Research', 'Academic Press', '04'), ('000005','The Case of Joe', 'Bantam Books', '05');

Answer 1

您的 columns 未对齐，并且您的 data length 对于给定数据而言太小。

CREATE TABLE Dept (
    Dept_ID INT(2) NOT NULL,
    Dept_Name CHAR(16) NOT NULL,
    Dept_Floor INT(1) NOT NULL,
    PRIMARY KEY (Dept_ID)
);

CREATE TABLE Publisher (
    Publisher_Name VARCHAR(50) NOT NULL,
    PubAddress VARCHAR(20) NOT NULL,
    Phone_Number VARCHAR(15) NOT NULL,
    PRIMARY KEY (Publisher_Name)
);

CREATE TABLE Book (
    Book_ID INT(6) NOT NULL,
    Title VARCHAR(40) NOT NULL,
    Dept_ID INT(2),
    Publisher_Name VARCHAR(50),
    PRIMARY KEY (Book_ID),
    FOREIGN KEY (Dept_ID) REFERENCES Dept(Dept_ID),
    FOREIGN KEY (Publisher_Name) REFERENCES Publisher(Publisher_Name)
);

INSERT INTO Dept (Dept_ID, Dept_Name, Dept_Floor) 
VALUES ('01', 'Fantasy', '1'), ('02', 'Sci-Fi', '1'), ('03', 'Fiction', '2'), ('04', 'Educational', '1'), ('05', 'Crime', '2');

INSERT INTO Publisher (Publisher_Name, PubAddress, Phone_Number)
VALUES ('Bloomsbury', '234 Hay Street', '14325673489'), ('Charles Scribner','236 Hone Way','173677654765'),('Pigeon Books','5444 North Street','17884787644'), ('Academic Press', '2354 Bridge Road', '175634598234'), ('Bantam Books', '2623 River Road', '17234648444');

INSERT INTO Book (Book_ID, Title, Dept_ID, Publisher_Name) 
VALUES ('000001','Harry Potter and the Goblet of Fire', '01', 'Bloomsbury'), ('000002','A Brief History of Time', '04', 'Bantam Books'), ('000003','The Great Gatsby', '03', 'Charles Scribner'), ('000004','Advances in Ecological Research', '04', 'Academic Press'), ('000005','The Case of Joe',  '05', 'Bantam Books');

Answer 2

在您的情况下，error/failure 表示外键约束正常工作。图书插入失败，因为您尝试插入出版商不存在的图书。其中两个，事实上：

('000003','The Great Gatsby','Charles Scribners Sons','03')

您没有 "Charles Scribners Sons" 发布者，只有 "Charles Scribner"。

('000002','A Brief History of Time','04','Puffin Books'),

您没有 Puffin Books 出版商，只有 Pigeon Books。

还有，你的书记错了，最后两个。他们有出版商名称，然后是部门 ID...

简而言之，正是这种错误应该发生的情况，因为您的数据格式不正确。

Answer 3

Create.sql 和 insert.sql 都有数据大小和排序问题。我刚刚更正了您的查询，现在它可以正常工作了。

---create.sql----
CREATE TABLE Dept (
    Dept_ID INT NOT NULL
    ,Dept_Name CHAR(16) NOT NULL
    ,Dept_Floor INT NOT NULL
    ,PRIMARY KEY (Dept_ID)
    );

CREATE TABLE Publisher (
    Publisher_Name VARCHAR(50) NOT NULL
    ,PubAddress VARCHAR(20) NOT NULL
    ,Phone_Number VARCHAR(15) NOT NULL
    ,PRIMARY KEY (Publisher_Name)
    );

CREATE TABLE Book (
    Book_ID INT NOT NULL
    ,Title VARCHAR(50) NOT NULL
    ,Dept_ID INT
    ,Publisher_Name VARCHAR(50)
    ,PRIMARY KEY (Book_ID)
    ,FOREIGN KEY (Dept_ID) REFERENCES Dept(Dept_ID)
    ,FOREIGN KEY (Publisher_Name) REFERENCES Publisher(Publisher_Name)
    );


---insert.sql---
INSERT INTO Dept (Dept_ID, Dept_Name, Dept_Floor) 
VALUES ('01', 'Fantasy', '1'), ('02', 'Sci-Fi', '1'), ('03', 'Fiction', '2'), ('04', 'Educational', '1'), ('05', 'Crime', '2');

INSERT INTO Publisher (Publisher_Name, PubAddress, Phone_Number)
VALUES ('Bloomsbury', '234 Hay Street', '14325673489'), ('Charles Scribner','236 Hone Way','173677654765'),('Pigeon Books','5444 North Street','17884787644'), ('Academic Press', '2354 Bridge Road', '175634598234'), ('Bantam Books', '2623 River Road', '17234648444');

INSERT INTO Book (Book_ID, Title, Dept_ID, Publisher_Name) 
VALUES ('000001','Harry Potter and the Goblet of Fire', '01', 'Bloomsbury'), ('000002','A Brief History of Time', '04', 'Charles Scribner'), ('000003','The Great Gatsby', '03','Pigeon Books'), ('000004','Advances in Ecological Research', '04','Academic Press'), ('000005','The Case of Joe', '05','Bantam Books' );

SQL 错误代码：1452 将数据插入 table 且 FK 引用另一个 table

SQL Error Code: 1452 when inserting data into table with FK referring to another table

mysql

sql

foreign-keys

relational-database